Resilient wheel.



, S. S. WILLIAM@ l RESILIENT WHEEL. f LPPLIOATION FILED AUG.19, 1910 Patented May 9, 1911.

' To all whom it may concern:

Beitknown that I .Sizrxiouii SVILLIAMS, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain newand useful improvements in Resilient \\f'heels; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the aitto which it appertaius to make and use thesanie.

'l`liis invention relates to iniprovriients lin resilient wheels and more especially to that class where air under pressure is utilized to el'ect the cushioning action when load pres.

sure is applied.

further object of the invention is to provide automatic. means whereby a constant supply of air is forced into the wli'eel parts ieimitting of an even and effective eusliioning action. A

Another object of the invention is to provide a wheel the outer rim ot which will be sullicient ly resilient to permit of the separate action of each plunger orlspoke to eli'ect a cushioning action. i

The invention also relates to the specific' details ot construction and the arrangement' of parts to be hereinafter described, and particularly pointed out in the claiin.

In the accompanying drawingsz-lFigure l is a side elevation ot the wheel, parts being shown in section. Fig. 2 is a detail elevation showing the wheel subjected to shock and the relation of the rim and plunger therewith. Fig. il is a detail vertical section on line of Fig. l.

Referring now to the drawings in which like `reference numerals indicate similar parts, A is the wheel comprising two seetions, an inner hub section provided with the usual axle opening and an outer resilient i'in section 9., the latter yieldably operating longitudinally of the aforesaid section.

The hub consists of an annular air chainher, partitioned from the axle opening, ai provided with radially disposed tubular spokes 3 communicating with said ehainber,

and c' 'u-.Ied-at their outer ends by a rim 4. 'llie spokes 3 extending froiuthe hub are circular in cross section and their inner walls are ground and constitute separate sleeves or cylinders for a purpose hereinaf- -ter described. Co-actiiig wit-h these sleeves or c vlindcrs'ai'e plnngers 5 which are car- "11 by the outer resilient rini 2. The plnrb.

' gers 45 are grouiidto ft' the igrounilsleeves and extend more than` h:.a.lf.'way Jinto;- the sleevesorcylindrs and in ,so doiigalssure very little escape of air. l

Protruding inwardly from the outer resilient riin section 2, is a. plunger 7 adapted to reciprocate in a corresponding ground sleeve or cylinder 8,-the latter at its ends being provided with' a check valve9, communicating with the chainbered hub. The sleeve 8 is apertured at 10 normally just above or in alineineutwith the innermost end of the' plunger 7. This affords a constant atmosphere pressure with the sleeve 8, thereby permitting of a constant source of air supply when the plunger 7 is operated.,

l do not wish to liniit myself to the exact construction of air supply, as any other convenient mechanism such as 'an ordinary hand punip or vthe like will serve the-saine purpose.

A suliicient lubricant is allowed to supply the several plungers, thus always compensating -for all leakage and affording 1ar'ieven operation.

The operation of the wheel is as follows: -'lhe chambered hu'bis filled with air under pressure combined with tlie'hibricant. The plungers co-acting with the several cylinder or sleeve spokes are so disposed that as thatpart of the resilient rim directly beneath each plunger 5r is broughtin contact with the. ground, said plunger is caused to opcratelongitudinally within its respective cylinder or sleeve; ample movementbeiiigafforded through the. resiliency of the riin by which 'it is carried; between the adjoining phingeis at either side of the' reciprocating plunger. This operation' is repeated as ea'ch plunger by its intermediate resilient rim seetion contacts with the ground, thus establishing an even cushioningactioir throughout the circumferential portion of the wheel. W'hen the plunger 7 by its rini section is brought into action a new charge or supply of air is a utomatcally injected ,to the eliainbered hull, thi. within said chamber-'to resist the shocks as liereinlxfore described. 'lhus it will be seen that an operative even cushioning action is obtained sultieiently ample to withstand the 'shocks' to which the wheel may be subjected.

Having thus described in v invention what. I claim as new and desire to secure' by Letterslatcnt isz- In a'resilient wheel, the combination of a always keeping a 4constant pressure chambered hub, tubular spokes projecting I arranged below the end of the piston when 'radially therefrom and carrying a rim, said piston is in its no1-mal position, where- `p1u`ngers slidably mounted in the tubular by the aperture is adapted to be closed by s' okes, a resilient outer rim secured to the the inward movement of the outer rim and' 15 ungers, a c linder leadin from the champiston to pump air into the chambered hub. ger. of the huii and 'located etween a' air of In testimony whereof I affix my signature -s `"okes a piston operative in -the cy inder, I in presence of two Witnesses.

{1 -t e4 istn extending throuvh'an o enin SEYMOUR S. WILLIAMS. P o P g I A inthe rim of the wheel and Aattached to the Witnesses: .1g outer resilient rim,4 and the cylinder pro- HORACE PRA'IT,

.- vvided withian aperture foradmitting air J. F. BURKHARnr. 

